kcf_rnd_get_bytes
return (kcf_rnd_get_bytes(ptr, len, B_TRUE));
return (kcf_rnd_get_bytes(ptr, len, B_FALSE));
error = kcf_rnd_get_bytes(random_bytes, len,
extern int kcf_rnd_get_bytes(uint8_t *, size_t, boolean_t);